The drainage channels give water an unobstructed path to escape from behind the cladding. This path helps eliminate ponding along siding edges that can occur with traditional housewraps. In fact, the newest drainable wraps can be as much as 100 times more effective at removing bulk water from the wall than traditional wraps.
2. Double-sided sealing tape. Even if installed correctly, traditional tapes can create a negative overlap and trap moisture that would otherwise drain down and out of the wall. Look for a drainable wrap that offers a double-sided taping system. The double-sided tape is applied on one part of the paper with another paper overlapping for a superior shingle lap fashion that prevents moisture — and meets code requirements.
So Levy had to make some tough decisions. Rather than the extensive use of metal siding she had planned, she had to go with more budget-friendly cement fiberboard. But she was still determined to maintain the clean, modern lines she originally envisioned. “Once you make the decision to use mostly cement fiber, the question is, how do you make it look a little different and how do you do it to scale?
Levy found answers to both questions in Tamlyn’s XtremeTrim extruded aluminum trim. “You’re always looking for inventive ways to create interest and scale while not blowing the budget,? she said. “In this case, it did all those things?
Part of the reason the trim worked so well was that it came in a wide variety of shapes and sizes to fit with the cement panel’s varied range of thicknesses, Levy says. “We were pleased to find there were some unusual trim pieces as well as regular trim pieces that worked with it,? she says. “This was not a project where we could have invented our own. It had to be off the shelf?
Using double-sided tape, shingle lapping should begin at the base of the wall assembly with the housewrap a minimum of 2 inches over the sill plate. All horizontal seams should be overlapped by at least 6 inches, all vertical seams by at least 6 inches and corners by 12 inches.
For more on improving water management check out Tamlyn’s Water Management Products.
